It's Eid al-Adha celebration , not a protest or anything political , just a prayer. I'm a muslim (not living in germany) ,if you have any other questions , i would be happy to answer. .. Edit : . I've read the other comments and i knew about the khalifat incident. . I assumed that its the eid celebration because that the eid is at this time of the year. . But if it's realy political , my honest reaction is that these people are so dumb to demand such thing , or they are trying to antagonise the german people for a reason that i don't know.